Double socket and sling structure



July 26, 1960 H. WAHL 2,946,619

DOUBLE SOCKET AND SLING STRUCTURE Filed Sept. 20, 1955 2 Sheets-Sheet 1 INVENTOR.

ATTORNEYS.

July 26, 1960 H. F. WAHL 2,946,619

DOUBLE SOCKET AND SLING STRUCTURE Filed Sept. 20, 1955 2 Sheets-Sheet 2 ATTORNEYS.

DOUBLE SOCKET AND SLING STRUCTURE Harold F. Wahl, Portland, reg., assig'nor to Electric .Steel Foundry Company, Portland, Oreg, a corporation of Oregon Filed Sept. 20, 1955, Ser. No. 535,413

2 Claims. (Cl. 294-74) This invention relates to a double socket and sling structure. The invention is particularly useful in connection with a double socket wedge block device equipped with a single eye and with sling elements combined therewith.

An object of the invention is to provide a double lin sling structure in which the ends of a cable may be readily anchored within a double socket block while providing an eye for use with pulleys, lead blocks, etc. Another object is to provide a double wedge type socket equipped with an eye and strap means therewith for providing a haul-back tail or means for readily anchoring a single eye block for use in various obvious rigging arrangements. A still further object is to provide a sling structure and block means whereby an eye-equipped block membermay be provided with double wedges for anchoring the ends of a cable from the block for various anchoring or supporting purposes, while at the same time firmly holding within the block the two ends of the cable to produce an effective balance therebetween with respec-t'to an integral single eye carried by the block. A still further object is to provide, in combination with an eye-equipped block and socket means for confining cable ends therein, quick-change fittings, equalizer eyes, etc., which may be employed with the loop formed by the cable, the ends of which are locked within said block. Yet another object is to provide in an eye-equipped block means for confining wedge plates therein in spaced relation, the wedge plates having grooves therein for receiving partial portions of cables, etc. Other specific objects and advantages will appear as the specification proceeds.

The invention is shown, in illustrative embodiments, by the accompanying drawings, in which- Figure 1 is a perspective view of sling-supporting means embodying my invention; Fig. 2, a perspective view showing sling means for supporting an eye-equipped block so as to provide a support for a pulley, etc.; Fig. 3, an enlarged and part sectional view in elevation of the double socket block shown in Fig. 1; Fig. 4, a view similar to Fig. 3, but showing a cable end in raised position and partly detached from the block; Fig. 5, a transverse sectional view, the section being taken as indicated at line 55 of Fig. 3; Fig. 6, a bottom plan view of the double socket block, the cable being removed; Fig. 7, a perspective view of the equalizer eye structure shown in Fig. 1; Fig. 8, a side \u'ew in elevation of the structure shown in Fig. 7; Fig. 9, a perspective view of a quick-change fitting providing a hook with which the end of the cable may be employed; Fig. 10, a perspective view of a modified form of socket structure; Fig. 11, a perspective view of a wedge block; Fig. 12, a sectional view of the wedge plate, section being taken as indicated at line 12-12 of Fig. 11; Fig. 13, a. sectional view, the section being taken as indicated at line 13-13 of Fig. Fig. 14, a transverse sectional view, the section being taken as indicated at line 14-14 plan view of. a modi- 13 having therein wedge-shaped openings or pockets 14 which extend all the way through the block :13. The two sockets 14 are spaced apart by a central web portion 15. Through each of the wedge-shaped pockets 14 is extended the end of the cable 11, and the looped upper portion of the cable is extended about a triangular wedge plate 16. The wedge plates are placed in position, as illustrated in Fig. 4, and after the cable 11 is then drawn downwardly, the plate 16 wedges within the recess 14 and locks the cable end therein.

I have found that a very effective sling structure can be provided by employing a pair of sockets or pockets 14 spaced apart centrally by the web 15 and while at the same time providing as an integral part of the fitting an eye-bar or loop 17. By disposing the pockets 14 onopposite sides of the median line or of the central web 15, -I find that a strong balance is provided in which each of the ends of the cable are firmly anchored within the pockets, whereby tension exerted upon the eye member 17 is effective in maintaining the cable ends firmly locked in position.

.and the lower end of the cable extends around the grooved endpiece 21, the groove being indicated by the numeral 22. A similar structure is shown in Fig. 7, except that immediately below the grooved eye portion 23 there extends a hook 19 which may be used for engag ing an anchoring element, or may be usedto engage a load or a container therefor, etc.

Operation In the operation of the structure, the ends of the cable may be passed through the pockets 14 of the block portion 13 and looped about wedge plates 16. Tension upon the cable is effective in locking the ends thereof firmly Within the pockets, as illustrated in Fig. 3. The

resulting structure provides an eye-equipped block having a cable loop, with the ends of the cable which form the loop held securely within the central portion of the block member 10. The lower looped end of the cable may be employed as a means for anchoring the block 10, or the same may be equipped with a hook or other desired connecting member. With this structure, there is provided a single eye, double socket, providing a double line sling and thus furnishing means for hanging a haulback tail or lead block on the single-eyed strap for the many purposes and advantages that are obvious to those acquainted with rigging. At the same time, an excellent balance of strength factors of the elements is provided and the structure permits the use of a single cable length to be readily utilized in the provision of the sling and with the spaced cable ends balanced with respect to the single eye.

In the illustration given in Figs. 10-15, inclusive, the block structure 13a has been changed in contour and the socket recesses 14a are merged in the lower portion of the block. The wedge plates 16a are each provided V 3 with a circular groove 25, as shown best in Figs. 11 and is particularly useful with ropes or cables having a diam 12. The loop or eye-bar 17a merges with a substantially eter above of an inch. square block portion 13a, and the web 15a extends to While, in the foregoing specification, I have set forth the bottom of the block. a specific structure in considerable detail for the pur- In the modification shown in Fig. 15, the web 15a is pose of illustrating an embodiment of the invention, it omitted and partial dividers 26 and 27 extend inwardly will be understood that such details of structure may be toward each other to provide abutments for retaining varied widely by those skilled in the art without dethe wedge plates 16a on either side of the members 26 parting from the spirit of my invention. and 27 of the block 13b. I claim:

In the modified structure shown in Figs. -15, in- 10 1. A sling device, comprising a cable and a socket clusive, the sharp corners have been eliminated and the block receiving the end portions of the cable, said socket structure modified to provide substantial space for the block having an integral eye-strap at the upper side operation of the wedge plates, the wedge plates, as dethereof and having therebelow and on either side thereof scribed above, being rovided with circular grooves for wedge pockets tapering downwardly and inwardly, said receivein ropes of difierent sizes etc. vedg pockets being spaced apart Wifll their broad faces n gonzxlbanatlon 1th Lltlc dc-by-side relation; wedge plata in said pockets f ta f a1 $355 1n e dzz e 1, added or the line Shortened. By employing the double intcgral with the u er line as PIOVldCG by I116 double SOCkct structure, the n extending in parallel vi'i ffi garfi i ge ggggg ygg damping mass may be interposed between the two susbetween sald wedge pockets, wedge plates 1n Stlltl pockets,

endin lines and the resultant angularity in the fines the end portions of said cable being looped about said etfects quite a different period of vibration. This result 30 we ge plates within said pockets and the depending poris of particular importance when screens are installed i n of ai c ble forming the sling, each leaving a in places where vertical height is restricted and the vibratdifferent Wedge Plate and in a different plant?- ing characteristics of the suspension must be controlled.

0g; 13 gih g d f l i t hg fgi y :5 2 9 References Cited in the file of this patent s eiso e rero es esreng oasinge line, and this is an important consideration on construc- UNITED STATES PATENTS tion work where the tendency is to use as light a line as 9 R08 Mar. 22, 1932 possible. 9, 1 H W I' h May 24, 1932 -It has been found that the structure shown in Figs. 1 2,152,096 uss ll Mar. 28, 1939 to 9, inclusive, is particularly suitable for use with ropes 40 or cables having a diameter of of an inch or less, FOREIGN PATENTS while the modification shown in Figs. 10 to 15, inclusive, 108,982 Great Britain Aug. 30, 1917 

